Human thermal comfort in the high-temperature radiant heat workshop

Abstract

Safety in production has always been a basic national policy in China, but there are still many high-temperature work scenarios in China, which seriously endangers the physical and mental health of workers. In this paper, the equivalent temperature (EQT) was selected as the evaluation index of human thermal comfort, and the equivalent temperature of each segment of the human body was calculated by selecting appropriate measurement points and placing a human body model, and the skin temperature on the human surface was accurately set according to the biothermal equation. The calculated equivalent temperature was compared with the temperature range that the human body felt comfortable with, and the relationship between the local temperature of the human body and the comfortable temperature was quantitatively judged. FLUENT is used to obtain physical quantities such as air velocity, air temperature, and indoor average radiation temperature around each segment of the human body, and then substitute the formula to solve the EQT of each segment of the human body. By comparing the equivalent temperature of each part of the human body with the equivalent temperature range value that the human body feels comfortable with, it is found that when the air inlet wind speed is 3 m/s without thermal insulation measures and 0.5 m/s when there are thermal insulation measures, all parts of the human body are within the comfortable range. This paper provides ideas for the cooling improvement of the thermal environment of high-temperature plants.